Bass Drum Kick Pedal
A bass drum pedal operates much the same as the hi-hat control; a footplate is pressed to pull a chain, belt, or metal drive mechanism downward, bringing a beater or mallet forward into the drumhead.The beater head is usually made of either felt, wood, plastic, or rubber and is attached to a rod-shaped metal shaft. The pedal and beater system are mounted in a metal frame and like the hi-hat, a tension unit controls the amount of pressure needed to strike and the amount of recoil upon release.
Tommy Aldridge pioneered[citation needed] the use of double bass drums in hard rock and heavy metal music.
A double bass drum pedal operates much the same way only with a second footplate controlling a second beater on the same drum. Most commonly this is attached by a shaft to a remote beater mechanism alongside the primary pedal mechanism. One notable exception to this pattern is the symmetrical Sleishman twin bass drum pedal.